Hoisting-bucket.



Patented May 6 I902.

} A. E. nonms. HUISTING BUCKET.

(Application file c (No Model.)

2 Sheets-Sheet l.

No. 699,343. Patented May 6, I902.

A. E. NORRIS.

HOISTING BUCKET.

(Application fl led Oct. 17 1901.)

'(No Model.) 2 Sheets-Sheet 2 A &9 i i. 4 I m HIIIIHIIIIII zr Nil! I Even/g2? UNrrnn STATES PATENT OFFICE.

ALMON E. NORRIS, OF CAMBRIDGE, MASSACHUSETTS, ASSIGNOR TO RAWV- SON d: MORRISON MANUFACTURING COMPANY, OF CAMBRIDGE, MASSA- CHUSETTS.

HOIS TlNG-BUCKET.

SPECIFICATION forming part of Letters Patent No. 699,343, dated May 6, 1902.

Application filed Qotoher 17,1901. Serial No. 78,984. (No model.)

To all 1077/0770 it may concern;

Beit known that 1, Anton E. NORRIS, a citizen of the United States, residing at Cambridge, in the county of Middlesex and State of Massachusetts, have invented an Improvement in Hoisting-Buckets, of which the following description, in connection with the accompanying drawings, is a specification, like figures on the drawings representing like parts. 7

This invention relates to what are known as clam-shell hoisting-buckets, and is an improvement on the type of bucket shown in the pending application of A. E. Norris and James Roughan, filed November 5, 1900, Serial No. 35,245.

In the bucket described in the above application the opening and closing chain passes through an eye or guide extending laterally from the head and then passes alternately around sheaves mounted on the bucket-sections and in the head, respectively, the end of the chain being secured to a depending arm secured to the head. The series ofsheaves carried by the pivotalbolt orpin which unites the bucket-sections, and the series of sheaves carried by the head are shown in said application as having parallel axes, and the guideeye through which the opening and closing chain passes is situated centrally of the head- '5. e., in a line substantially mid way between the two sheaves supported in the head. With this construction it will be obvious that as the opening and closing chain passes through the guide-eye and to the end sheave ot', the series connected to the buckets the reach of the chain between the guide-eye and sheave will stand at an inclination to the vertical, and, further, the course of the chain in passing Irom one sheave of the lower series to a sheave in the head or upper series, or vice versa, is

to each other that the reaches or portions of the chain between the various sheaves will stand substantially vertical. Furthermore, I so position the guide-eye upon the head that it is substantially vertical over the first or end sheave of the lower series. With this construction all unnecessary friction or binding of the chain and the sheaves is done away with and a bucket which requires a minimum amount of power for its operation is produced. Referring to the drawings, Figure 1 is an elevation of my improved bucket. f Fig. 2 is a detail showing the head. Fig. 3 is a plan view of the head. 7 Fig. at is a side elevation thereof; and Fig. 5 is a diagrammatic View showing the relative angular relation between the two series of sheaves.

The bucket comprises the two bucket-sections 3 and 4, which may be of any suitable or usual construction and which are pivoted in any suitable or usual way, as by means of the pivotal rod 5. Supported on the rod 5 is the usual weight (3, which may have centrally thereof the cut-away portion to receive a series of axially-alined sheaves 7, as in the application above referred to. The head to which the usual holding-rope .10 is attached is designated generally by 12, and comprises the upper portion 13, to whichthe holdingrope 10 is attached in any suitable Way, as by ears 14, and to which the usual links 16are also pivoted, preferably by means of bolts passing through the apertures 15. These parts are such as are common to the above-mentioned application and form no part of the present invention. The upper portion 13 of the head has its faces parallel with the sides of the bucket, or, in other words, the said upper portion is squared with the bucket, this relation of said upper portion obviously being necessary for the proper operation of the bucket-sections. tion of the head, however, is set 01' positioned at an angle to the upper portion thereol ,whereby theaxes of the sheaves therein have an angular relation to the axes of the sheaves 7.

I have shown the sheave-receiving portion of the head as comprising a hood-like device 20, which depends from the upper portion 13,

The sheave-receiving porsheaves.

the sides of the hood-like device being in planes at an angle to the planesof the ends 21 of the upper portion 13 of the head, as illustrated in Figs. 3 and 4, and being provided with bearings to receive the pin 24, on which the sheaves25 in the head are mounted. Be-

cause of the angular relation between the hood portion and the upper portion of the head it will be seen that the sheaves 25 have an angular relation to the sheaves 7, and the construction is preferably such that this angular relation is that illustrated in Fig. 5, whereby the opening and closing chain is guided from one sheave to the next without any appreciable inclination of the chain between the sheaves.

Extending laterally from the upper portion 13 of the head is the eye 28, as in the application referred to, the said eye preferably having detachably secured thereto a suitable leader 29 for the purpose of directing and taking the wear caused by the chain. In this embodiment of my invention, however-,1 prefer to place the guide-eye 28 adjacent one end 21 of the head, whereby the said guide-eye is substantially vertically over the first or end sheave'7 of the series of sheaves on the bucket.

In order to accommodate the opening and closing chain, that side of the hood 20 adjacent the guide-eye 28 is provided with a verticalchain-receiving groove or depression 30. 7

Depending from the side 18 of the hood is an arm 19, to which the end of the opening and closing chain 33 is connected, the said arm being preferably inclined to the vertical, and because of the angular relation of the hood to the upper portion of the head being situated substantially over the sheave 7 of the lower series.

Preferably the side 18 of the hood will have the protecting-lugs 34 thereon, as in the applieation above referred to.

In constructing my head I prefer to make the same in one integral casting or piece, though it will be obvious that the head may be made of one or more pieces suitably secured together, if desired.

From the above it will be apparent that by using my improved head in a bucket of the clam-shell type the opening and closing chain is guided from one sheave to the next sheave in such a way that the portions of the chain between the sheaves assume substantially vertical lines, and the said portions are substantially at right angles to the axes of the I desire to state that while I have herein shown one embodiment of my invention it will be obvious that the structure of the degether, a head, links connecting the head and segments, a series of sheaves carried on the pivotal connection between said bucket-segment-s, a corresponding series of sheaves mounted in the head, and an opening and closing chain passing around the sheaves of said two series,'the sheaves of one series having an angular relation to the sheaves of the other series,whereby those portions of the said chain stretching between the sheaves are substantiall y at right angles to the axis of said sheaves.

2. In a hoisting-bucket, two bucket-segments pivotally connected together, a head, links connecting said head and bucket-segments, a series of axially-alined sheaves carried by the bucket-segments, a second series of axially-alined sheaves mounted-in said head, and an opening and closing chain passing over said sheaves, the axes of the two series of sheaves having an angular relation to each other.

3. In a hoisting-bucket, two bucket-segments pivotally connected together, a head, links connecting said head and bucket-segments, aseries of axially alined sheaves mounted on the pivotal connection between said bucket-segments, said head having its upper portion squared with the bucket-segments, and its lower portion formed to receive sheaves rotating about an axis having an an-- gular relation to the axis of said first-namedsheaves, and an opening and closing chain passing about said sheaves.

4. In a; clam-shell hoisting-bucket having two pivoted bucket-segments, a head having an upper portion squared with said bucketsegmentsand to which said segments are connected, and a lower sheave-receiving portion having an angular relation to the said bucketsegments.

5. In a clam-shell hoisting-bucket, two pivoted bucket-segments, a head having an upper portion squared with said bucket-segments and to which said segments are connected, and a lower sheave-receiving portion having an angular relation to the said bucketsegments, and a guide-eye extended laterally from one end of said upper portion, combined with an openingand closing chain passing through said guide-eye.

6. In a clam-shell hoisting-bucket having two pivoted bucket-segments, a head having an upper portion squared with said bucketsegments and to which said segments are connected, and a lower sheave-receiving portion having an angular relation to said bucket-segments, said head having a laterally-extended guide-eye situated adjacent one end of said upper. portion, and a leader surrounding the opening and closing chain and detachably secured to said guide-eye, combined with the said opening and closing chain;

7. In a clam-shell bucket, two bucket-segments pivoted together, a series of sheaves mounted on the pivotal connection between the segments, a head carrying a second series of sheaves cooperating with said first-named -ICO series, an opening and closing chain passing over said sheaves, said head having a laterally-extended guide-eye substantially in line with the end sheave of the first-mentioned series.

8. In a clam-shell bucket, two bucket-segments pivotally connected together, a series of sheaves mounted on the pivotal connection between the said segments, a head carrying a second series of sheaves cooperating with said first named series, said second series of sheaves having an angular relation to the sheaves of the first series, a guide-eye extended laterally from the head substantially in line with the end sheave of the first-named series, combined with an opening and closing chain passing through said guide-eye and around said sheaves, the construction being such that the runs of the chain between the sheaves are substantially at right angles to the axis of said sheaves.

9. In a hoisting-bucket, two bucket-segments, a head, connections between said head and bucket-segments, and a series of sheaves carried by the bucket-segments and turning about a common axis, a second series of sheaves mounted in the head and also having a common axis, and an opening and closing chain passing about all of said sheaves and operating to open and close both bucket-segments simultaneously, the'axes ofthe two series of sheaves having such an angular relationto each other that the runs of the chain between the sheaves are substantially at right angles to the axis of said sheaves.

10. In a hoisting-bucket, two bucketsegments, a series of sheaves carried thereby, a head, a second series of sheaves mounted therein, the sheaves in the head having an angular relation to the sheaves carr ed by the bucket-segments, an opening and closing chain passing around the sheaves of'both series, an arm rigid with the head and to which the end of the opening and closing chain is fastened, said arm being situated substantia'lly over the end sheaves of the series carried by the bucket-segments.

11. In a hoistingbucket, two bucket-segments, a head having an upper portion square with said segments and to which the segments are connected, and a lower sheave-receiving portion having an angular relation to said bucket-segments, an arm rigid with the lower sheave-receiving portion of the head and to which the end of the opening and closing chain is adapted to be secured.

12. In a hoisting-bucket, two bucket-segments, a plurality of sheaves carried thereby, a head, a series of sheaves carried thereby and having an angular relation to the sheaves carried by the bucket-segments, an opening and closing chain passing around the sheaves of both series, an arm rigid with the head and to which the end of the opening and closing chain is attached, said arm being in alinement with the portion of the chain secured thereto, and being situated substantially over the end sheave of the series carried by the bucket-segments.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

ALMON E. NORRIS.

Witnessesr LoUIs 0. SMITH, JOHN C. EDWARDs. 

